Method of manufacturing prepared roofing.



APPLICATION FILED SEPT. 26, i917.

Patented Feb. 18, 1919.

3 SHE TSSHEET I.

INVENTOR ,Si/as M Ward ATTOE S. M. FOR-D.

METHOb OF MANUFACTURING PREPARED ROOFING.

APPLICATION FILED SEPT. 26, 1917.

1 ,294,785 7' Patented Feb.18,l919.

Z a SHEETSSHEET 2.

MW iww I S. M. FORD.

METHOD OF MANUFACTURING PREPARED ROOFING.

Patented Feb. 18, 1919.

APPLICATION FILED SEPT-26, I91?- 3 SHEETSSHEET 3.

INVENTfQ R Silas N 0rd ATTORNEY SEAS M. FORD, 015' ST. PAUL, MINNESOTA.

METHOD OF MANUFACTURING PREPARED ROOFING.

I Specification of Letters Patent. Patented Feb, 18, 19119.

0rigina1 application filed February 3, 1916, Serial No. 76,050. Dividedand application filed October 6, 1916, Serial No. 124,184. Divided andthis application filed September 26, 1917. Serial No. 193,398.

To aZZ whom it may concern Be it known that I, SILAs M. FORD, a citizenof the United States, and a resident of St. Paul, in the county ofRamsey and State of Minnesota, have invented certain new and usefulImprovements in Methods of Manufacturing Prepared Roofing, of which thefollowing is a specification.

This application refers to a method of manufacturing prepared roofing,and is a divisional of my co-pending application Serial No. 124,184,filed Oct. 6, 1916, method of manufacturing prepared roofing, which, inturn, was a divisional of my co-pending case, Serial No. 7 6050, filedFebruary 3, 1916, for method of manufacturing prepared roofing Thisinvention relates more particularly to a method of making preparedroofing in the form of shingle strips or single shingles, in whichwater-proofing compound is so deposited and formed that the completedshingle strips or shingles will have a greater thickness at the bottomof the shingle forma tion than at the top thereof.

With this and incidental objects in view, the invention consists ofcertain sequences of operations, the essential elements of which arehereinafter described with reference to the drawings which accompany andform a part of this specification.

In the drawings, Figure 1 is a schematic view of the construction usedin my general method of preparing improved roofing. Fig. 2 is a sideelevation of a conventional construction utilized in making roofingpaper, varying in thickness in different strips. Fig. 3 is a sectiontaken on the axis of the pulleys shown in Fig. 2. Fig. 4 is a sectiontaken through the axis of a pair of rollers (with the major portions ofthe rollers broken away) used in making prepared roofing of differentthicknesses in different strips of sheets. Fig. 5 is a plan view of twostyles of scrapers. Fig. 6 is an isometric view of a portion of a rooflaid with shingles cut from roofing sheets having some portions of thesheet thicker than other portions, and Fig. 7 is a view, partly insection, of a pair of specially prepared rollers used in formingwater-proof sheets with sections of different thicknesses.

in the drawings Fig. l discloses a machine A for making'the water-proofsheets hereinafter, described; a machine B for water-proofing thefoundation sheet, and a machine C for joining and drying the two sheetsthus formed.

As the method of operation of this set of machines is fully described inmy co-pending applications aforesaid, it will not be thicker than thetop, the thickness diminishing gradually from the butt to the top;second, where approximately half of the shingle at the butt is of auniform thickness, and the half at the top is also of a uniformthickness which is less than that of the lower half.

In forming the prepared roofing for the first named style, I use a pairof specially formed rollers, such as 31, Fig. 7, in place of the rollers9, shown in the machine A, Fig. 1. Fig. 7 shows partly in section such apair of rollers with the belt 8 and the water-proof compound formedthereon.

The belt 8 is stretched tightly so as to follow the contour of therollers, and the waterproof oompound deposited on the belt from thereservoir 10, Fig. 1,will tend to flow so as to seek a level, as shownin Fig. 7, at $3, leavin the compound thicker at 33 than at 33 t erollers 13 in the machine will, of course, tend to assist the naturaltendency of the compound to seek its level and set itself in the shapeas disclosed in the cross section in Fig. 7, and in case I am using amineral coating from the reservoir 12, Fig. 1, 1 would use an additionalpair of rollers just beyond the scraper 11.

In making the second style of roofing to be out into shingles ofdifferent thiclmesses in difi'erent parts of the shingle, I employ apair of rollers similar-to those disclosed in Fig. 4:, which is asection taken through the axis of the two rollers, with the majorportions of the rollers broken away tovbetter show the contour of thesurfaces of the rollers.

The upper roller 51 has a smaller diameter at the portions 51 than atthe portions a, Fig.1,

52, and this pair of rollers would he placed in the position on the helt8 in the machine occupied by the scraper 11.

ll also use a scraper ll to accomplish the same result as the rollers 51and 52, the scraper ll used in the machine A, Fig. 1, being shown in afront view in Fig. 5, and as used to form different thiclmesses ofwaterproofing sheet being shown as ll", Fig. 5, the result beingobvious.

l also obtain the same result by running the belt fi l, Fig. 2, over thepulley 51, in this case the pulley oeing of uniform diameter throughout,but the belt of .difierent thicknesses along its longitudinal strips, asshown in Fig. 3, which is a cross section taiicen to show the varyingthickness of the o t. Y

When shingles cut from roofing strips made in this manner are laid upona roof, the appearance is as shown in Fig. 6, the butt 81 of the uppershingle resting snugly in the corner formed at 82 in the lower shingle.

lt is apparent that mineral surfacing of various natures may he appliedto shingles or shingle strips formed in this style, as will be evidentto those skilled in the art.

We in describing my method, I have set up a certain series of operationsand shown a specific type of machine, I do not wish it understood that llimit myself in this manner, as it is evident that the invention may hevaried in many ways within the scope of the following claims.

Claims:

1.. The method of manufacturing roofing material wherein a water-proofsheet is formed by depositing on a heat resisting surface a waterproofcompound of varying thickness, the sheet so formed removed from the heatresisting surface and then joined to a foundation sheet, and theresultant sheet then cut into shingle strips so the shingles of theshingle strips will taper from a butt,

of a given thickness, to the top, of lesser tloicmiess 2. The method ofmanufacturing roofing material, wherein a water-proof is formed bydepositing on a surface a waterproof compound of varying thicknesses,the sheet of water-proof compound so formed then being removed from thesurface, the water-proof compound then joined to a foundation sheet, andthe resultant sheet then out into shingle strips so the shingles of theshingle strips will have butts of greater thickness than the topsthereof.

3. The method of manufacturing roofing material, wherein a water-proofsheet is formed by depositing on a surface a waterproof compound ofvarying thicknesses, the sheet so formed then removed from said surface,and then joining the water-proof compound sheet so formed to afoundation sheet.

a The method of manufacturing roofing material, wherein a water-proofsheet is formed Joy depositing on a traveling heat resisting surface awater-proof compound of varying thicknesses, the sheet so formed thenremoved from said surface and thereafter joined to a foundation sheetseparately prepared.

5. The method of manufacturing roofing material, wherein a water-proofsheet is formed by depositing on a surface a water-- proof compound,working the compound down to varying thicknesses at difierent parts ofthe sheet, the sheet so formed'removed from said water-proof sheet andthen being joined to a foundation sheet separately prepared.

6. The method of manufacturing roofing material, wherein a water-proofsheet is formed by depositing on a surface a water: proof compound,working the compound down to varying thicknesses at difi'erent parts ofthe sheet, the sheet so formed removed from said surface and then beingjoined to a foundation sheet separately prepared, and the resultantsheet then out into shingle strips so that the shingle strips will taperfrom a butt, of a given thickness, to the top, of lesser thickness.

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